* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
.beijing img{
    height: 500px;
    width: 100%;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.first {
    text-align: center;
    margin-bottom: 40px;
    margin-top: 40px;
}

.first h2 {
    font-size: 2em;
    margin-bottom: 10px;
}

.second {
    margin-bottom: 40px;
}

.second h2 {
    text-align: center;
    font-size: 1.8em;
    margin-bottom: 20px;
}

.second1 {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.second2 {
    width: 30%;
    background-color: #f4f4f4;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    margin-bottom: 20px;
}

.second2 img {
    width: 200px;
    height:250px;
    border-radius: 10px;
    margin-top: 20px;
    margin-bottom: 15px;
}

.second2 h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
}

.second2 p {
    font-size: 1em;
    margin-bottom: 15px;
}
footer{
    background-color: #000000;
    color: #b7b7b7;
    height:60px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
}
